The Multiquip 21290 Pump Control Lever W/A M25 is a genuine OEM component designed for the HTX44 and STX55 series hydrostatic ride-on power trowels. As an authentic Multiquip replacement part, the 21290 is manufactured to the same specifications as the original, ensuring a direct, trouble-free installation. This lever assembly is confirmed to fit the HTX44K4, HTX44K5, HTX44Y4, HTX44Y5, HTXD6i, STX55J6, STX55Y6, and STXD6i models. Keeping this critical hydraulic control component in top condition is essential to safe, precise trowel operation on any concrete finishing job.
Key Features
- Genuine OEM Construction — Manufactured by Multiquip to original design tolerances, ensuring the lever engages and detents correctly within the pump control linkage.
- Direct Bolt-On Replacement — Matches the mounting configuration of the original lever assembly for a straightforward swap with no rework of the surrounding linkage.
- Broad HTX and STX Series Fitment — Verified compatible with HTX44K4, HTX44K5, HTX44Y4, HTX44Y5, HTXD6i, STX55J6, STX55Y6, and STXD6i ride-on trowels.
- Precise Hydraulic Pump Control — A correctly functioning lever delivers smooth, consistent input to the hydrostatic pump, giving the operator accurate blade speed and drive response across the slab.
- Operator Safety Relevance — The pump control lever is a primary operator interface on a hydrostatic trowel; a worn or damaged lever can result in unintended machine movement, making timely replacement a safety priority.
- OEM Part Number Traceability — Sourced and sold as Multiquip part 21290, making it straightforward to cross-reference against your machine's service manual or parts diagram.
The pump control lever assembly on a hydrostatic ride-on trowel transmits the operator's input directly to the hydraulic pump, regulating blade pitch and drive speed. On the HTX and STX series machines, this lever is part of the closed-loop hydrostatic circuit that gives the operator fine control over trowel movement and finishing pressure across the concrete surface. When the lever wears, bends, or the welded assembly loosens, the operator loses precise control of the hydraulic system — resulting in inconsistent blade speed, unintended drift, or difficulty holding a consistent finish pass.
Part Details
| Part Number | 21290 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Pump Control Lever W/A M25 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Ride-On Power Trowels | HTX44K4 |
| Whiteman Ride-On Power Trowels | HTX44K5 |
| Whiteman Ride-On Power Trowels | STX55J6 |
| Whiteman Ride-On Power Trowels | HTX44Y4 |
| Whiteman Ride-On Power Trowels | HTX44Y5 |
| Whiteman Ride-On Power Trowels | STXD6i |
| Whiteman Ride-On Power Trowels | HTXD6i |
| Whiteman Ride-On Power Trowels | STX55Y6 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
